Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:25:00 2013

Optimize a model with 33117 rows, 32547 columns and 130017 nonzeros
Presolve removed 2162 rows and 0 columns
Presolve time: 0.19s
Presolved: 30955 rows, 32547 columns, 125693 nonzeros
Variable types: 32490 continuous, 57 integer (57 binary)

Root relaxation: objective 5.749350e+04, 5140 iterations, 0.59 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 57493.4991    0    2          - 57493.4991     -      -    0s
H    0     0                    57665.000000 57493.4991  0.30%     -    0s
     0     0 57497.3996    0    3 57665.0000 57497.3996  0.29%     -    1s
     0     0 57497.3996    0    2 57665.0000 57497.3996  0.29%     -    1s
     0     0 57498.0439    0    3 57665.0000 57498.0439  0.29%     -    1s
     0     2 57501.9683    0    3 57665.0000 57501.9683  0.28%     -    2s
*    5     3               2    57590.000000 57566.0000  0.04%  76.4    2s
*    7     0               2    57566.000000 57566.0000   0.0%  61.4    2s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 8 nodes (7674 simplex iterations) in 2.29 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.756600000000e+04, best bound 5.756600000000e+04, gap 0.0%